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ISO C Series
Aspect Ratio: 1:1.414 (√2)
C4 Format
Millimeters229 × 324 mm
Inches9.02 × 12.76″
Common Uses
Envelopes (fits A4 unfolded)
C4 Standard
📐Pixel Dimensions
Digital canvasses rely on exact pixel densities (DPI/PPI) to match physical print dimensions. Graphic designers standardly request assets rounded to the nearest whole pixel at these crucial breakpoints:
72 DPI
Canvas Size649 × 919pixels (px)
Standard web output and rough digital mockups.
150 DPI
Canvas Size1353 × 1914pixels (px)
High-res digital art or minimal standard print flyers.
300 DPI
Canvas Size2706 × 3828pixels (px)
The gold standard for crisp professional printing (magazines, books, commercial work).